Basic demographic data and neuropsychological test results in each groupa
| Healthy (a) | AD (b) | iNPH (c) | Post Hoc (5%) | |
|---|---|---|---|---|
| Age (yr) | 70.07 ± 3.83 | 71.67 ± 9.36 | 72.15 ± 5.79 | a = b = c |
| Sex | 46.7% (male) | 46.7% (male) | 46.2% (male) | |
| K-MMSE | 28.2 ± 1.21 | 19.73 ± 2.96 | 21.85 ± 4.38 | a > b, c |
| Education | 9.89 ± 4.69 | 8.67 ± 5.64 | 7.50 ± 5.99 | a = b = c |
| CDR score | 0 | 0.97 ± 0.48 | 0.62 ± 0.30 | a < b, c |
| CDR-SOB | 0 | 4.90 ± 2.96 | 2.58 ± 2.29 | b > c > a |
a Values are expressed as mean ± SD. Age, K-MMSE, education levels, CDR score, and CDR-SOB scores were analyzed using the nonparametric Kruskal-Wallis test. Sex distribution was analyzed using the χ2 test. K-MMSE and CDR scores between AD and iNPH were not significantly different (P > .05 in the nonparametric Mann-Whitney U test).